Supporters of Pakistan's slain leader Benazir Bhutto gather on the fourth anniversary of her death

Women supporters of Pakistan's slain leader Benazir Bhutto hold her posters at a ceremony to mark the fourth anniversary of her death, in Islamabad, Pakistan, on Tuesday, Dec. 27. Bhutto was assassinated in Rawalpindi on Dec. 27, 2007.

Asif Hassan / AFP - Getty Images

A gathered crowd listens to Pakistani President Asif Ali Zardari, widower of assassinated former premier Benazir Bhutto, outside the Bhutto mausoleum on the fourth anniversary of her death.

Farooq Naeem / AFP - Getty Images

Activists of ruling Pakistan Peoples Party (PPP) launch lanterns on the fourth anniversary of the death of former premier Benazir Bhutto in Islamabad on December 27. Pakistan's embattled president used the fourth anniversary of his wife Benazir Bhutto's assassination to urge the country to foil "conspiracies against democracy."